There is no 1st edition sticker on the inside.  There might have been 2 runs of this same box in 1992 and 1995. Or sticker came off

       No other way to tell. I am the original owner, just didn't know about the sticker when purchased.

Bottom tray right corner split

Open carefully as glue is old and cover starting to lift.  

The 3rd disc sleeve has a slight corner bend. Slight.

Other than mentioned, this box set is in amazing shape. All discs look UNPLAYED. NM No issues. All sleeves NM (except for the mentioned)

The booklet still crisp as unopened.